SafetyMargin.ioSafetyMargin.io
BlogWatchlistCompare
Compare Stocks › PFE vs WST

Pfizer Inc. (PFE) vs West Pharmaceutical Services, Inc. (WST)

PFE
Pfizer Inc.
$27.41
VS
WST
West Pharmaceutical Services, Inc.
$240.33

Rewards

PFE
  • ★Gross margin of 75.8% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
  • ★Dividend yield of 6.28% with a consistent or growing payout over the past 4 years.
  • ★FCF yield of 8.6% is historically attractive — the business generates significant cash relative to its price.
WST
  • ★West Pharmaceutical Services, Inc. has maintained ROIC above 10% for 4 consecutive years, suggesting solid business economics.
  • ★Each dollar of retained earnings has created $1.70 of market value — management is creating shareholder value.
  • ★Altman Z-Score of 13.89 indicates very low bankruptcy risk — the company is firmly in the safe zone.

Risks

PFE
  • ⚠ROIC has declined by 13.9 percentage points over the observed period, which may signal competitive erosion.
  • ⚠Free cash flow has declined at a 29.6% CAGR over the past 4 years — a concerning trend.
WST
  • ⚠FCF yield of 2.7% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
  • ⚠PEG ratio of 16.83 indicates the stock is expensive relative to its expected growth — the market may be pricing in more growth than analysts project.

Key Valuation Metrics

Learn more →
PFE
WST
Valuation
$13.43B
Free Cash Flow
$468.90M
8.61%
FCF Yield
2.71%
20.15
Trailing P/E
35.34
9.69
Forward P/E
27.17
Quality & Moat
7.67%
ROIC
15.01%
8.96%
ROE
15.55%
75.81%
Gross Margin
35.91%
N/A
PEG Ratio
16.83
Balance Sheet Safety
0.78
Debt / Equity
0.10
N/A
Interest Coverage
N/A
2.10
Net Debt / EBITDA
-0.57
6.28%
Dividend Yield
0.37%
PFE: 6Ties: 1WST: 4
PFEWST

Historical Fundamentals

Learn more →
PFE

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

WST

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

$1 Retained Earnings Test

Learn more →
PFE
N/A
Net losses over 3 years — test not applicable
Company had negative cumulative retained earnings
Σ Retained
$-10.61B
Δ Market Cap
$-146.18B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
WST
$1.70
created per $1 retained over 3 years
Value Creator
Σ Retained
$1.40B
Δ Market Cap
+$2.38B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer

Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer

Discounted Cash Flow (DCF) Analysis

Learn more →
PFE
140.2% Overvalued
Price is 140.2% above estimated fair value
Current Price: $27.41
Fair Value: $11.41
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
WST
35.1% Overvalued
Price is 35.1% above estimated fair value
Current Price: $240.33
Fair Value: $177.86
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

Learn more →
PFE

What growth rate is the market pricing in at $27?

+11.8%
Market-Implied Owner Earnings Growth
Standard FCF implies +4.3%

The market implies +11.8% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +4.3%, reflecting heavy growth investment.

WST

What growth rate is the market pricing in at $240?

+15.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +15.7%

The market implies +15.0% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +15.7%, reflecting heavy growth investment.

Economic Moat Score

Learn more →
PFE
35/100
No Moat
70+ Wide · 40-69 Narrow · <40 None

No durable moat detected, though reinvestment efficiency shows some competitive positioning. The business lacks consistent evidence of sustainable advantages.

Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 5 years of fundamental data.
WST
68/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None

Narrow moat with revenue predictability as the key competitive advantage. Improving margin stability would strengthen the moat.

Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.

Forensic Accounting

Learn more →
PFE
-2.53
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone

M-Score Trend

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
WST
-2.77
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone

M-Score Trend

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.

Ownership Breakdown

Learn more →
PFE
Insiders 0.1%Institutions 67.7%Retail & Other 32.2%
No. of Institutional Holders3,693
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
WST
Insiders 0.6%Institutions 97.6%Retail & Other 1.8%
No. of Institutional Holders1,146
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.

High insider ownership aligns management incentives with shareholders. Institutional concentration can indicate smart-money conviction but also crowding risk.

Insider Buying Activity

Learn more →
PFE
0
Buys (3M)
0
Buys (12M)
BLAYLOCK RONALD E
Director
$499,072
@ $25.65 · 2025-02-13
GOTTLIEB SCOTT
Director
$28,240
@ $28.24 · 2024-10-30
Open market purchases · includes direct & indirect ownership · excludes option exercises
WST
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises

Open market purchases · includes direct & indirect ownership · excludes option exercises.

Insider Selling Activity

Learn more →
PFE
0
Sells (3M)
0
Sells (12M)
DAMICO JENNIFER B.
Officer
$64,825
@ $25.93 · 2025-03-04
DAMICO JENNIFER B.
Officer
$147,714
@ $28.66 · 2024-08-13
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
WST
0
Sells (3M)
0
Sells (12M)
WITHERSPOON CHARLES
Officer and Treasurer
$218,211
@ $310.40 · 2024-10-29
WITHERSPOON CHARLES
Officer and Treasurer
$308,700
@ $300.00 · 2024-08-19
GREEN ERIC MARK
Chief Executive Officer
$9.36M
@ $304.71 · 2024-08-06
ABRAHAM SILJI
Chief Technology Officer
$595,404
@ $330.78 · 2024-06-12
HOFMANN THOMAS W
Director
$225,773
@ $365.92 · 2024-05-10
GREEN ERIC MARK
Chief Executive Officer
$24.20M
@ $366.65 · 2024-05-07
GREEN ERIC MARK
Chief Executive Officer
$24.20M
@ $366.65 · 2024-05-07
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives

Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives.

🎭 Mr. Market's Mood

Learn more →
PFE
FearGreed
😏Greed(64/100)

"Market is optimistic — be cautious and ensure you have a margin of safety"

Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
WST
FearGreed
😨Fear(40/100)

"Market is pessimistic — investigate whether fears are temporary or structural"

Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.

Composite sentiment score based on market signals. Inspired by Buffett’s "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.

⚖️ Buffett Signal

Learn more →
PFE
⚪Awaiting DCF Data

The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.

DCF Margin of Safety: N/AMr. Market's Mood: Greed (64)
WST
⚪Awaiting DCF Data

The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.

DCF Margin of Safety: N/AMr. Market's Mood: Fear (40)
View PFE Full AnalysisView WST Full Analysis